More than 80% of children will experience at least one ear infection before they turn three-years-old. Ear infection is one of the top reasons that parents seek medical treatment for their children, causing fever, irritability, and ear pain. Also known as otitis media, an ear infection is caused by fluid buildup behind the eardrum that results in inflammation. It is typically caused by bacteria. According to the Centers for Disease Control (CDC), antibiotics are not a recommended treatment for most ear infections.